Five tissue slides: record and sort each one
Open your materials, follow the steps, then turn in your work.
Record five tissue slides on a five-panel organizer, sort each slide into one of the four tissue groups from what you can see, and connect the groups to one organ.
1. Open your materials
2. Start the work
Read Reference R in the tissue handout and try Model M's magnification check. Read the five slide cards, D1 to D5, so you know what to look for before you sit at the microscope.
Show all 4 required steps
- Read Reference R in the tissue handout and try Model M's magnification check. Read the five slide cards, D1 to D5, so you know what to look for before you sit at the microscope.
- Use the five-panel organizer, printed or copied. For each of the five slides record the tissue type, the total magnification as a product, a sketch with two labeled features, and two observation sentences. Use the microscope when you have one. If not, record the card's 400x view: write 10x times 40x = 400x, sketch what the card describes, and mark that panel "from the described card".
- Write the main tissue group on each panel using Reference R's two questions. Then write one organization line for the stomach: cell, tissue, organ, organ system, organism, with one example at each level.
- Check all five panels and the organization line with the handout's turn-in list. Save them as one PDF, scanning paper clearly. Submit in Wk4 Lab notebook: Tissue types and body-organization model using your section's Schoology button below and check the uploaded preview.
Lost your place? Open the D card for the slide in front of you. Write the tissue type and the magnification product first, then sketch and label two features.
Check your work before submitting
- My five panels each show a tissue type, its main group, a total magnification written as a product, a sketch with two labeled features, and two observation sentences.
- I can name the visible feature that places each slide in one of the four groups.
- My organization line puts five levels in order with one stomach example at each level.
- I submit one PDF in my own section's assignment and mark any panel recorded from a described card at its 400x view.
Before lab work: read the safety rules
- Carry the microscope upright with two hands, one under the base. Set it down away from the bench edge and keep the cord clear of the aisle.
- Prepared slides are glass. Hold them by the edges, keep them flat on the stage, and tell Mr. Mendoza at once if one chips or breaks. Do not pick up broken glass with your fingers.
- Start on the 4x objective. Use only the fine focus on the 40x objective so the lens never touches the slide. Never use the 100x oil objective today.
- Wash your hands after the microscope work. Return each slide to its labeled slot in the box.
3. Turn in your work
DueCheck Schoology- Hand in
- Five completed tissue organizer panels and one stomach organization line
How to submit and name your file
Submit one PDF with all five completed panels and your stomach organization line in Wk4 Lab notebook: Tissue types and body-organization model. Choose your own section below. Follow its posted due date and check the uploaded preview.
In Schoology, open your course and the assignment for this lesson. Attach your file, select Submit, and check that it appears in the submission.
PDF upload helpYou get two school days for every day you were absent, so this deadline moves with you.
Choose your Schoology section. Open only one assignment.
Check the section number beside Human Anatomy and Physiology in Schoology.
Assignment: Wk4 Lab notebook: Tissue types and body-organization model
Link will not open? Open Schoology, choose your section, and find the assignment title above.
How this lesson connects
Planes and cavities locate a structure → five slides show the tissue level → sort each by what you see → tomorrow, describe a location without claiming tissue damage.
Unit 1 guide: what to keep and use nextNeed help? Warm-up, timing, and directions▸
💡 Big idea: Four groups build every organ. You tell them apart by how the cells are arranged and what sits between them.
- 0-10 minRead Reference R and try Model M's magnification check
- 10-20 minRead D1 to D5 and set up the five-panel organizer
- 20-55 minMicroscope rotation: one complete panel per slide, five slides
- 55-65 minSort each panel into a group with the two questions
- 65-72 minWrite the stomach organization line
- 72-80 minCheck the turn-in list, save one PDF, submit in your section
- • Today you look at five real slides and record each one the way a histologist would: what you see, at what magnification, and which group it belongs to.
- • The handout supplies the sorting rule, the magnification rule and a described card for every slide. Nothing has to be looked up.
- • Keep this original practice separate from the official PLTW organizer and the cohort in Schoology.
- • : A group of similar cells, plus the material between them, that does one kind of job.
- • : Cells packed side by side in a sheet that covers a surface or lines a hollow organ.
- • : Cells spread out in a material they make, called matrix: fibers, gel, liquid or solid.
- • Muscle : Long cells that shorten, or contract, to produce movement.
- • Nervous : Cells with long extensions that carry signals.
- • Total magnification: Eyepiece magnification multiplied by objective magnification. A 10x eyepiece with a 4x objective gives 40x.
PLTW connection and today's work
John Hay original recording practice supporting PLTW HBS Activity 1.1.3, Held Together by a Thread, the microscope portion. The official activity pages, the PLTW Histology Organizer and cohort patient records stay in your Schoology course. The handout links to both sections' course materials.
Today's stopping point: Stop after the five panels and the organization line. Do not add practice details to the official cohort chart or mark a PLTW activity complete from this practice.
Today uses John Hay teacher-created practice. It builds skills for the course, but does not count as completing an official myPLTW activity.
Course connection
- Activity 1.1.3 Held Together by a Thread
Use the turn-in directions at the top of this page. Do not create a second submission unless your teacher asks for one.
Show another explanation or a smaller first step
Need help? Choose a starting point
Finish the assigned lab safely before starting extra practice.
Lesson resources: reading, slides, and vocabulary▸
The deck carries the prior idea forward, lets you inspect an analogy, maps the rule to biology, and ends with the same evidence decision and exit ticket used on this page.
Generated from this lesson's canonical data with a red-team citation check.
Radiologists and surgeons name a location by plane and because a plane says which direction a view is cut and a cavity says which region a finding sits in; the terms narrow where to look, and the exact organ or finding still has to be named on its own.
Four groups build every organ. You tell them apart by how the cells are arranged and what sits between them.
Driving question: Which visible feature places each of the five slides in one of the four groups?
What you already know: Cells are the smallest living units. Reference R defines the four groups before you use them.
New idea: Four groups build every organ. You tell them apart by how the cells are arranged and what sits between them.
Visual or model: F1. F1 is a text model of the sorting rule, not a photograph of a slide. The D cards describe what each slide looks like. What to notice: Two questions sort every slide: how the cells are arranged and what sits between them.
- Find the region at low power, 40x, then raise the magnification to 100x or 400x to see cell details.
- Ask the arrangement question: packed sheet, cells spread in material, long strands, or cells with branching extensions.
- Ask the between-cells question: almost nothing, a lot of matrix, or thin partitions.
- Confirm with one specific feature such as a free surface, fibers, or crosswise stripes, then record the group and the magnification.
Real biomedical example: A histologist compares a sample with the normal arrangement for that . A change in arrangement is a reason for closer study, not by itself a diagnosis. Source: Types of Tissues.
What the evidence supports: The record supports naming the group and describing the visible structure of each slide.
What it cannot prove: Classify each slide by what you can see and record the magnification. These cards and observations show structure at one moment. They cannot support a diagnosis or a claim about a cohort patient, and do not measure function.
- • : A group of similar cells, plus the material between them, that does one kind of job.
- • : Cells packed side by side in a sheet that covers a surface or lines a hollow organ.
- • : Cells spread out in a material they make, called matrix: fibers, gel, liquid or solid.
- • Muscle : Long cells that shorten, or contract, to produce movement.
- • Nervous : Cells with long extensions that carry signals.
- • Total magnification: Eyepiece magnification multiplied by objective magnification. A 10x eyepiece with a 4x objective gives 40x.
Use it now: Use Model M. If the eyepiece is 10x and you switch from the 4x to the 40x objective, how does the total magnification change?
Go further, optional: OpenStax chapter 4 and the official PLTW materials add context. The handout contains every required input for this practice.
D1 to D5 in the handout: original plain-English cards describing what each assigned slide typically shows at 100x and 400x. Use them to know what to look for, or record the card's 400x view when no microscope is available.
Limit: A card describes a typical slide, not your own observation. Record what you see, or mark a card-based panel as supplied.
Your five organizer panels: type, main group, total magnification as a product, a sketch with two labeled features and two observation sentences.
Limit: A sketch records what you saw at one magnification. It is not a measurement or a diagnosis.
No patient record, reference slide or function measurement is supplied. These cards and observations show structure at one moment.
Limit: Classify each slide by what you can see and record the magnification. These cards and observations show structure at one moment. They cannot support a diagnosis or a claim about a cohort patient, and do not measure function.
HBS-TISSUE-SORT · Simulated classroom evidence scenario
Your role: visitor in a hospital histology lab
Decision: A slide arrives labeled only with a code. Decide how you will place it in one of the four groups before you fill in its panel. Use Reference R, the D cards and the limits in E3.
- • Sort the slide by how its cells are arranged and what sits between them, then confirm with one feature you can see.
- • Name the group from the organ the slide came from, since a stomach slide has to show stomach and each organ has its own kind.
- • Leave the group blank until a second slide of the same organ is checked, since one field of view cannot show the whole sample.
Response: Five completed organizer panels and one stomach organization line, saved as one PDF. The choice discussion is preparation, not another submission.
Claim ceiling: Classify each slide by what you can see and record the magnification. These cards and observations show structure at one moment. They cannot support a diagnosis or a claim about a cohort patient, and do not measure function.
Total magnification = eyepiece magnification times objective magnification.
Model M: 10x eyepiece times 4x objective = 40x. 10x eyepiece times 40x objective = 400x.
Magnification has no unit; write x after the number. Record the objective you actually used for the sketch, or 40x with "from the described card" for a card-based panel.
Write the total magnification for each of your five panels, showing both factors.
Students often think the organ a slide came from tells me its group, so a stomach slide shows stomach tissue. The trap: every organ is built from several groups. The group is decided by cell arrangement and the material between cells, which you must observe and record
Panel for a slide not on today's list: simple squamous epithelium, a thin lining.
Tissue type: simple squamous epithelium. Main group: epithelial. Total magnification: 10x eyepiece times 40x objective = 400x. Sketch labels: flat cell outline; central nucleus.
Observations: One layer of thin, flat cells fits together like floor tiles, with a rounded nucleus bulging near the middle of each cell. Almost nothing sits between the cells and the sheet has one free surface, so this is epithelial tissue.
Organization line for a different organ, the heart: cell (one cardiac muscle cell), tissue (cardiac muscle tissue), organ (the heart), organ system (cardiovascular system), organism (the whole person).
| Panel field | Model M |
|---|---|
| Tissue type | Simple squamous epithelium |
| Main group | Epithelial |
| Total magnification | 10x times 40x = 400x |
| Two labeled features | Flat cell outline; central nucleus |
| Observation 1 | One layer of thin flat cells fitted like tiles |
| Observation 2 | Almost nothing between cells; one free surface |
| Source | Microscope |
This model shows the level of evidence and organization needed to complete: Separate original practice showing a complete organizer panel and an organization line, not answers for today's five slides.
- Date and label the entry.
- Record the procedure, observation, or design decision clearly.
- End with what the evidence means and the next step.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Use the microscope or the D cards for your own five panels and write the stomach organization line yourself. Submit one PDF to Wk4 Lab notebook: Tissue types and body-organization model in your section, not this model.
- CER:
- Claim, Evidence, Reasoning: make a claim, back it with evidence, explain your reasoning.
- SOP:
- Standard Operating Procedure, the exact steps to follow (especially in a lab).
- Tracker:
- Your PLTW progress log where you record completed evidence.
- myPLTW:
- The PLTW course site where you do the online activities. Find it in Clever with your Microsoft sign-in, right next to Schoology.
Practice: try a question, then check your answer▸
Claim ceiling for this check: Classify each slide by what you can see and record the magnification. These cards and observations show structure at one moment. They cannot support a diagnosis or a claim about a cohort patient, and do not measure function.
A slide shows long cells lying side by side, each with many nuclei at its edges and fine crosswise stripes. Which group is it, and which feature decided it?
Write an answer and pick a confidence to unlock the key.
Missed class or ready for more?▸
For Wednesday: keep your five panels. The anatomy-location practice asks where a structure is, not which tissue it is, so the two records stay separate.
Finish the checklist before you handle any material.
- • Carry the microscope upright with two hands, one under the base. Set it down away from the bench edge and keep the cord clear of the aisle.
- • Prepared slides are glass. Hold them by the edges, keep them flat on the stage, and tell Mr. Mendoza at once if one chips or breaks. Do not pick up broken glass with your fingers.
- • Start on the 4x objective. Use only the fine focus on the 40x objective so the lens never touches the slide. Never use the 100x oil objective today.
- • Wash your hands after the microscope work. Return each slide to its labeled slot in the box.
- 1Set the 4x objective in place, turn the light on low, and put the first slide on the stage with the label facing you.
- 2Focus with the coarse knob at 4x until you see color, then center a clear region. Switch to 10x and refocus with the fine knob.
- 3On that slide's panel, write the tissue type and the total magnification as a product, for example 10x times 10x = 100x.
- 4Sketch what fills the field of view. Label two features from the slide's D card, such as a nucleus, a fiber, a free surface or a stripe.
- 5Switch to 40x only with the fine knob. Add any feature you can now see, and note the new magnification if you changed your sketch.
- 6Write two observation sentences: how the cells are arranged, and what sits between them. Then return to 4x before removing the slide.
- 7Repeat for all five slides. Mark any panel you completed from a described card instead of the microscope.
| Tissue type | Main group | Total magnification as a product | Sketch with two labeled features | Two observation sentences | Source: microscope or described card |
|---|---|---|---|---|---|
Before each slide, write the one feature its D card says to expect.
After the slide, write the feature you actually saw and whether it matched the card.
What today's skills lead to. These are real health-science careers this course builds toward. Tap one to see, on the US Department of Labor's O*NET site, what the job actually involves, what it pays, and how fast it is growing.
The that become most of the bone and of the face.
Goes with: The cells that build the face
The master switch: how a cell decides to become bone rather than something else.
Goes with: The master switch: how a cell chooses its fate
How a seam disappears: EMT and let palatal shelves fuse.
Goes with: When palatal shelves meet: the seam must disappear
Use the handout's five described slide cards, D1 to D5, instead of the microscope. For each panel use the card's 400x view, write 10x times 40x = 400x, and mark the panel "from the described card". Add the stomach organization line, save one PDF and submit in your own section. If upload fails, keep the work and tell me.
Tissue sorting rule, slide cards and step-by-step helpSubmit one PDF with all five completed panels and your stomach organization line in Wk4 Lab notebook: Tissue types and body-organization model. Choose your own section below. Follow its posted due date and check the uploaded preview.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
Tissue sorting rule, slide cards and step-by-step help- CompleteEvery required part of the artifact is present, nothing left blank.
- AccurateThe science and the data are correct and match the evidence.
- Scientific reasoningYou explain your claim with evidence and reasoning (CER), not just an answer.
- Professional communicationClear, organized, labeled, and written the way a clinician or scientist would.
- SubmittedSubmit one PDF with all five completed panels and your stomach organization line in Wk4 Lab notebook: Tissue types and body-organization model. Choose your own section below. Follow its posted due date and check the uploaded preview.
- Error analysis and method · counts doubleName a specific limit of the method and how it moved your result, and compare what you predicted to what happened. "Human error" does not count; say what about the procedure or instrument caused it.
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